Sack-sewing machine



No. 608,639. Patented Aug. 9, I893.

N. F. BECKER.

SACK SEWING MACHINE.

(Application filed Mar. 1, 1897 (No Modal.) 4 Sheets-Sheet I.

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Aha/0.4 os FBECKEI? No. 608,639. Patented Aug. 9, I898.

N. F. BECKER.

SACK SEWING MACHINE.

(Application filed Mar. 1, 1897.)

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No. 608,639. Patented Aug. 9, I898.

N. F. BECKER.

SACK SEWING MACHINE.

(Application filed Mar. 1, 1897.!

(No Model. 4 Sheets-Sheet 3.

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No. 608,639. Patented Aug. 9, I898. N. F. BECKER.

SACK SEWING MACHINE.

(Application filed Mar. 1, 1897) (No Model.)

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Nrrnn After FFIGE NICHOLAS F. BECKER, OF CINCINNATI, OHIO, ASSIGNOR TO CHARLES DICKINSON, OF CHICAGO, ILLINOIS.

SACK-SEWING IVIACHINE.

SPECIFICATION forming part of Letters Patent No, 608,639, dated August 9, 1898.

Application filed March 1, 1897- To all whom it may concern.-

Be it known that I, NIoHoLAs F. BECKER, a citizen of the United States, residing in Cineinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Sack-SewingMachines,of which the following is a specification.

My invention relates to improvements in sack-sewing machines.

The object of my invention is to provide a light movable hand-operated machine of a simple, efficient, and durable construction that may be conveniently and quickly applied to one filled sack after another and by means of which the mouths of filled sacks may be rapidly and cheaply sewed as they stand without moving them.

To this end my invention consists, in connection with a holder or clamp for holding themouth of the sack closed while it is being sewed, of a light movable frame adapted to rest upon the upper end of the filled sack and be anchored in position thereon by the sackholder or the clamp itself, which is attached to said frame and provided with a rack or other suitable device for actuating the needle of the sewing device, and a sewing-carriage adapted to be reciprocated by hand along said anchored frame and provided with a sewing mechanism the gear of which engages said rack, so that the sewing mechanism is actuated from and by the movement of the carriage itself. By this means the sack-holder itself anchors or holds the frame of the sewing mechanism to and upon the sack and affords the resistance against which the power of the operator is exerted in pushing or moving the sewing-carriage along the frame to actuate the sewing mechanism or needle and looper.

My invention also consists in the novel construction and combinations of parts and devices herein shown and described, and specifled in the claims.

In the accompanying drawings, forming a part of this specification, and in which similar letters of reference indicate'like parts in all the views, Figure l is a plan view of a machine embodying my invention. Fig. 2 is a vertical section on line 2 2 of Fig. 1. Fig. 3 is an end view. Figs. 4c and 5 are detail views Serial No. 625,656. No model.)

.of parts hereinafter to be described. Fig. 6,

is a detailed view of the needle, and Figs. 7 and 8 illustrate a modification in which a worm is substituted as an equivalent of a rack for the actuating device on the frame.

In the drawings, A represents the frame of the machine. It is provided with a curved seat or shelf A, adapted to fit and rest upon the side of the filled sack X, and with a curved seat or shelf A adapted to receive and rest upon the filled sack at or near the middle of its closed mouth, as is clearly illustrated in the drawings at Fig. 2.

B and B are the two parts or jaws of the sack holder or clamp, by which the mouth X of the sack is held closed while being sewed and by which the frame-or the machine as a whole is anchored or fixed to the sack, so that the necessary power may be exerted upon it by the operator to actuate the sewing mechanism. The fixed jaw B of the sack holder or clamp is preferably made or cast integral with the frame A. The movable jaw B of the holder or clamp is hinged to the fixed jaw B, at the upper edge thereof, by pivots b and is provided with springs B which serve to hold the clamp closed. The fixed jaw B is pro vided with a horizontal longitudinal sloth, through which the needle may reciprocate, and the movable jaw B is provided with a wider slot Z) for the same purpose, the slot if being made wider to permit the hinged jaw B to open or swing up without interfering with the looper-head.

In placing the mouth. X of the filled sack X within the holder 13 B the holder-jaw B is swung up, as indicated in dotted lines in Fig. 2, and the surplus X of the mouth of the sack, extending above the hinge b, is folded down by the closing of the jaw B, so as to make a double fold in the mouth of the sack at the point Where the stitching is to occur.

The frame A is provided with guide rods or bars C C, fixed thereto and extending lengthwise of the same, upon which the carriage D of the sewing mechanism reciprocates. The frame A has also secured to ita suitable device E for imparting motion to the needle and looper of the sewing mechanism as the carriage D is reciprocated. This actuating ISO device E is preferably made in the form of a toothed rack, as illustrated in the drawings at Figs. 1 to 4. Another suitable form for the actuating device E is a worm, as illustrated in the modification, Figs. 7 and 8.

F is the needle, and G the looper, of the sewing mechanism. The needle F is provided with a slot or hook f to receive the thread, the lip f of the hook being depressed below the general surface of the needle, as illustrated in the enlarged View Fig. 6, so that the lip will not interfere with the free withdrawal of the needle from the fabric, while at the same time serving to uniformly and securely catch the thread when pressed into the bevel or recess f just back of the lip by the operation of the looper G at suitable intervals, as required. The needle F is secured in a needle-holder F and is reciprocated by a crank H on the crank-shaft H through the connecting-pitman H and slide F The needle-holder F is pivoted at f to the slide F so that the needle may have a slight tilting or yielding movement to prevent lateral strain thereon and compensate for the continuous sliding movement of the needle-carriage in respect to the stationary sack while the needle is in the cloth. A spring f secured to the slide F and bearing against the needle-holderF serves to return the needle-holder F into a straight line with the slide F after the needle is withdrawn from the sack. The slide F reciprocates in a suitable guide D on the carriage D. The pitman H is hinged to the slide F by a pivot 71. The crank-shaft II is geared to the actuating-rack E by a gear h on said shaft II, which meshes with a gear 7L2, loose on a counter-shaft 72. and which is connected by a pawl 72, with a gear 7L5, fast on said counter-shaft, the counter-shaft having a second gear 71. fast thereon, which, meshes with said rack E. The pawl 7L is held in engagement with said gear or ratchet 71,5 by a spring 7L7, so that the crank-shaft II will be rotated and the needle and looper actuated when the carriage D is making its direct or forward movement, but will not be operated when the carriage makes its backward or return movement. The looper G has an eye 9, through which the thread passes, and it is given a simple rocking or vibratory movement to press the thread or twine into engagement with the needle or with the recess f therein, so as to be properly engaged by the hook or slit of the needle on its backward movement. The looper is secured to a looper head or arm G, secured to or made integral therewith and by which the looper is given its necessary rocking movement. The looper head or arm G is thus actuated by a rock-shaft G journaled in suitable bearings G on the sewing-carriage D and the rear end of which is hollow or a sleeve and provided with a spiral groove or cam 9, that is engaged by a pin 9 fixed to a reciprocating sleeve g inside the sleeve G and which sleeve g is furnished with a longitudinal slot and with an adjustable collar or stop 9 and is itself reciprocatedrby a pin 9 on the slide g that is pivoted at g to the pitman H on the crank II of the shaft II. By adjusting the collar or stop g on the slotted sleeve g backward or forward the looper may be made to pause a shorter or longer interval in position to hold the thread against the needle, as required.

The reciprocating sewing-carriage D is preferably itself shaped at its upper part to serve as a proper handle or object for the hand of the operator to grasp to move it back and forth along the frame A.

K is a spool receptacle or holder on the upper part of the sewing-carriage D. The thread at passes out through a suitable eye or guide a in the holder, and thence through the guides n n n to the eye 9 of the looper.

In the modification illustrated in Figs. '7 and 8 a worm E is substituted as an equivalent for the rack E as the actuating device on the frame for imparting motion to the needle and looper by the reciprocating movement of the sewing-carriage. In this modification an eccentric nut E journaled in a sliding block E that reciprocates on a pivoted yoke E, connected by a pin with slide E, is substituted as the connecting-gearing for actuating the needle and looper. In this modification the ratchet 7L5 is on the worm E and the pawl k operates to hold the worm from rotating when the carriage D makes its forward movement and permits the worm to rotate while the carriage D is returning, and thus leaves the sewing mechanism out of gear.

I claim 1. In a machine for sewing filled sacks, the combination with a two-part holder or clamp comprising a stationary and a movable jaw, of a support or frame carried by the stationary jaw and extending outwardly and downwardly below the lower edge of said jaw and adapted to rest upon the filled sack, and a reciprocating sewing-carriage furnished with a sewing mechanism, said support or frame being provided with an actuating rack or de vice for operating the sewing mechanism from and by the sliding movement of said carriage on said support or frame, substantially as specified.

2. In a machine for sewing filled sacks, the combination with a two-part holder or clamp comprising a stationary and a movable jaw, of a support or frame carried by the station -ary jaw and extending outwardly and downwardly below the lower edge of the jaw and adapted to rest upon the filled sack, and a reciprocating sewing-carriage furnished with a sewing mechanism, said support or frame being provided with an actuating rack or de vice for operating the sewing mechanism from and by the sliding movement of said carriage on said support or frame, said sewing-carriage having means for grasping it by the hand, substantially as specified.

3. In a machine for sewing filled sacks, the combination with a light movable frame adapted to rest upon and be supported by the filled sack, of an opening and closing holder or clamp on said frame for holding the mouth of the sack closed in posit-ion for sewing and anchoring or holding said frame in position upon the sack, and a reciprocating sewingcarriage furnished with a sewing mechanism, said frame being provided with an actuating rack or device for operating the sewing mechanism from and by the sliding movement of said carriage on said frame, said sack holder or clamp comprising a slotted jaw fixed to said frame and a slotted movable jaw hinged at its upper edge to said fixed jaw, substantially as specified.

4-. The combination with a movable frame A adapted to be applied by hand to and rest upon a filled sack, of a sack-holder jaw 13 fixed to said frame, and a movable jaw 13 hinged to said jaw 13, a rack on said frame, guides on said frame, a sewing-carriage reciprocating 011 said guides, a crank shaft journaled on said carriage, connecting-gearing between said crank-shaft and rack, a needle, a reciprocating needle-holder slide, and a free or yielding needle-holder, unconnected to the frame, and pivotally connected to the outer end of said needle-holder slide, a connection between said needle-holder slide and crank-shaft, a looper and looper arm and shaft and connections between said looper shaft and crank-shaft, substantially as specified.

5. The combination with a movable frame A adapted to be applied by hand to and rest upon a filled sack, of a sack-holder jaw 13 fixed to said frame, and a movable jaw B hinged to said jaw B, a rack on said frame, guides on said frame, a sewing-carriage reciprocating on said guides, a crank-shaft journaled on said carriage, connecting-gearing between said crank-shaft and rack, a needle, a reciprocating needle-holder slide, and a free or yielding needle-holder, unconnected to the frame, and pivotally connected to the outer end of said needle-holder slide, a connection between said needle-holder slide and crank-shaft, a looper and looper arm and shaft and connections between said loopershaft and crankshaft, and a pawl and ratchet for causing said crank-shaft to be operated when said carriage is moved in one direction but not when moved in the other, substantially as specified.

6. The combination with frame A of holderjaw B fixed thereon and having slot Z), hinged holder-jaw 13 having slot or opening 19 needle F and needle-holder F, looper G and looper-arm G, said slot or opening permit ting said holder-jaw B to swing up or open without engaging said looper, substantially as specified.

NICHOLAS F. BECKER.

"Witnesses:

EDMUND ADCOCK, H. M. MUNDAY. 

